For nine months, the Victoria HarbourCats build toward summer. On Tuesday night, they finally get to unwrap it. “Opening Day is Christmas,” HarbourCats managing partner Jim Swanson said. “Right now there’s a lot of work to do in putting the tree up. We’re still putting the lights on a little bit right now and making sure they plug in.” The HarbourCats return to Wilson’s Group Stadium at Royal Athletic Park on June 2 to open their home schedule a…